TAKING A STANDARD COUNT
To adjust readings for source decay (see Appendix A) and natural
background radiation, take a daily standard count. A four-minute
daily standard count helps ensure the highest measurement
accuracy.
Locate the reference standard block shipped with the gauge. Always
take standard counts using the reference standard block.
Choose a standard count site. The standard count site should be:
♦
Dry and flat
♦
At least 3 meters (10 ft) from any large vertical surface
♦
At least 10 meters (33 ft) from any other radioactive source
♦
On asphalt, concrete, or compacted soil at least 10 centimeters
(4 in.) thick
Turn the gauge on. At the Ready display, press the 〈STANDARD〉
key. The gauge displays the last standard counts for density (DS)
and moisture (MS).
To take a new standard count, press 〈1〉. To view the last four
standard counts, press
〈2〉 and scroll through the counts by pressing
the
〈ENTER〉 key.
When taking a new standard count, the gauge displays:
MS = xxxx
1- Take new count
2- View counts
Place Gauge On
Standard Block
Press ENTER
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